What is the difference between profinet and ethernet

Follow us on Twitter Youtube. Rate 0. Suggestion To thank Quote Answer. Hope this helps, Daniel Chartier.

This contribution was helpful to 1 thankful Users Berg. Profinet Best regads, Berg. This contribution was helpful to 3 thankful Users dchartier crazyCow grrrrrroooo. Rate 1. The major difference is hardware layerof slave devices. A profinet master is cheap running with ordinary NIC, while slave device is very expensive. This contribution was helpful to 1 thankful Users Saeed Bahadori. High bandwidth, large message size, and versatility are just some of the benefits of having Ethernet on the factory floor.

PROFINET allows you to build a network configuration and define the data exchange between controllers and devices in an automation network. Ethernet Layer 1 and 2 defines the electrical signals within the wire, how to access the bus, and how to send and receive telegrams in a LAN. However, the Ethernet cables that you might encounter in a home or office environment might not be the best choice. Those cables can be weak and might lack shielding.

The factory floor, where PROFINET is most commonly used, can be a rough environment with challenging conditions such as extreme temperatures, humidity, vibrations, and electromagnetic interference.

For that reason, even though you can employ standard Ethernet cables, it is recommended to use industrial Ethernet cables. On the wire, they are the same thing. Both are open networks that are backed by defined standards and extensive communities. As of , Industrial Ethernet is growing at a rate of 20 percent [2] , and makes up for 38 percent of the global market compared to 34 percent last year.

Ethernet continues to displace other networks, including DeviceNet and Modbus. Wireless technologies now represent 4 percent of the worldwide industrial network market.

Globally, Profibus remains the largest installed network and continues to grow in Europe. But Profinet has the fastest growth rate in Europe. Here in the U. There are numerous reviews available comparing performance of networks. Like the latest and best in class car reviews, they tend to hold a degree of bias.

We tried to evaluate first with some hard data. Determinism is the limiting factor to overcome [4]. Standard Ethernet is notoriously non-deterministic, meaning we cannot guarantee that a message will arrive within a desired window of time. This has been the single greatest argument against Ethernet for years in automation.

However, the advancement of the protocol technology is winning. Higher speed, more demanding applications such as motion control require responses in the microsecond region. Per the graph above, systems operating at speeds of less than 1 ms should have very little potential for deterministic failure.

With many systems running between 10 ms and ms, Ethernet-based systems are more than adequate for the job. Each protocol will continue to produce a faster and more deterministic Ethernet. There is considerable interest in the advancement of Ethernet technology, and standards bodies such as IEEE are supporting the cause. In IEEE began a set of standards for networks [5] , including specific standards for Ethernet.

The technology defined by IEEE is currently being used in the following industries: telecommunications, power generation and distribution, industrial automation, robotics, data acquisition, test and measurement.